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fix(esp_http_client): implement chunked transfer encoding in before tranport write

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Closes https://github.com/espressif/esp-idf/issues/17685
This commit is contained in:
nilesh.kale
2026-04-15 16:10:16 +05:30
parent 80116d4e07
commit c3a413a8a5
6 changed files with 288 additions and 8 deletions
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components/esp_http_client/esp_http_client.c
+42 -2
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@@ -1886,8 +1886,8 @@ esp_err_t esp_http_client_open(esp_http_client_handle_t client, int write_len)
int esp_http_client_write(esp_http_client_handle_t client, const char *buffer, int len)
{
if (client->state < HTTP_STATE_REQ_COMPLETE_HEADER) {
return ESP_FAIL;
if (client == NULL || len < 0 || client->state < HTTP_STATE_REQ_COMPLETE_HEADER || (buffer == NULL && len > 0)) {
return -1;
}
int wlen = 0, widx = 0;
@@ -1904,6 +1904,46 @@ int esp_http_client_write(esp_http_client_handle_t client, const char *buffer, i
return widx;
}
int esp_http_client_chunk_write_begin(esp_http_client_handle_t client, const int len)
{
if (client == NULL || client->state < HTTP_STATE_REQ_COMPLETE_HEADER || len <= 0) {
return -1;
}
char header_buffer[16];
int header_len = snprintf(header_buffer, sizeof(header_buffer), "%x\r\n", len);
int wlen = esp_transport_write(client->transport, header_buffer, header_len, client->timeout_ms);
if (wlen < 0 || wlen != header_len) {
return -1;
}
return 0;
}
int esp_http_client_chunk_write_end(esp_http_client_handle_t client, bool last_chunk)
{
if (client == NULL || client->state < HTTP_STATE_REQ_COMPLETE_HEADER) {
return -1;
}
/* Send chunk trailer: \r\n */
int wlen = esp_transport_write(client->transport, "\r\n", 2, client->timeout_ms);
if (wlen < 0 || wlen != 2) {
return -1;
}
if (last_chunk) {
/* Send final terminator: 0\r\n\r\n */
const char *terminator = "0\r\n\r\n";
wlen = esp_transport_write(client->transport, terminator, strlen(terminator), client->timeout_ms);
if (wlen < 0 || wlen != strlen(terminator)) {
return -1;
}
}
return 0;
}
esp_err_t esp_http_client_close(esp_http_client_handle_t client)
{
if (client->state > HTTP_STATE_INIT) {